RxJava Essentials. 2 . PDF and ePub files available? You can upgrade to the eBook . We also provide you with a PDF file that has color images of the. download RxJava Essentials by Ivan Morgillo (ISBN: ) from [1] https ://bestthing.info RxJava Essentials [Ivan Morgillo] on bestthing.info RxJava Essentials Paperback – May 27, . Anyway there is pdf version already, a bit disappointed.

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rxjava-essentials-cn: RxJava Essentials 一书的中文翻译版,仅供学习交流使用. 0 Change Requests. Star Subscribe · Read · Download PDF. RxJava—Reactive Extensions for the JVM—is a library for composing asynchronous and event-based programs using Observable sequences. private Observable getApps() { return bestthing.info(subscriber -> {. List apps = getList(); for (AppInfoRich appInfo: apps) {.

The reactive programming style with RxJava will help you beat Android Platform limitations to create astonishing Android Apps.

This book will be a practical journey, from the basics of reactive programming and Observer pattern concepts, to the main feature of RxJava, which will be accompanied by practical code examples and a real-world app.

I'll show you how to create an Observable from "scratch", from a list, or from a function that we already have in our codebase.

You will learn how to filter an Observable sequence to create a new sequence, containing only the values we want; you will also learn how to apply a function to an Observable and how to concatenate, merge, or zip Observables.

RxJava Essentials - Sample Chapter

I'll show you how to enjoy RxAndroid Schedulers to overcome the threading and concurrency hell in Android. NET to RxJava, takes initial steps into the reactive world.

We will compare the reactive approach with the classic approach, and will explore the similarities and differences between them. Chapter 2, Why Observables? Chapter 3, Hello Reactive World, uses what we have learned so far to create our first reactive Android app. Error handling in RxJava :xJava makes error handling a snap.

Just use onError, right?

That's fine and dandy if you're the subscriber, but what about exceptions that occur inside your operators? How do you ensure that an Exception in, say, flatMap gets passed along to onError? And what if you don't want the exception to terminate the sequence?

How to upgrade to RxAndroid 1. You can read more about it here, but essentially:I am proposing a from-scratch, modularization of the library into re-usable and composeable modules. That has been accomplished, but if you upgrade now you're probably wondering: where did everything go and how can I get my code compiling again? Deferring Observable code until subscription in RxJava :I've grown fond of RxJava's defer as a tool for ensuring Observable code runs when subscribed rather than when created.

I've written about defer before but I'd like to go into more detail here. I could simply hit the network each time I need the data, but caching the data on disk and in memory would be much more efficient. However, I can understand if you're still not compelled to use RxJava - you don't have much to work with yet. But that will change quickly - a big part of the power of RxJava is in all of the operators included in the framework.

RxJava Essentials - Sample Chapter

Let's go through an example to introduce you to more operators. In part 2, I showed you how powerful operators could be. But maybe you're still not sold; there isn't quite enough there yet to convince you. Here's some of the other benefits that come along with the RxJava framework which should seal the deal. But as an Android developer, how do you make it work for you? Here is some practical information for Android developers.

RxAndroid is an extension to RxJava built just for Android. It includes special bindings that will make your life easier. Reactive Extensions is a library to compose asynchronous and event-based programs using observable collections and LINQ-style query operators, quoted from the corresponding MSDN site. Netflix made the library available for the public on Github, supporting Java 6 or newer, making it available to use with Android apps as well. First RxJava RxJava Observable tranformation: concatMap vs flatMap :After a while I decided that was time to get back for some writing.

Debugging RxJava on Android :Debugging is the process of finding and resolving bugs or defects that prevent correct operation of computer software Wikipedia.

Nield Thomas. Learning RxJava

Nowadays debugging is not an easy task, specially with all the complexity around current systems: Android is not an exception to this rule and since we are dealing with asynchronous executions, that becomes way harder. As you might know, at SoundCloud, we are heavily using RxJava as one of our core components for Android Development, so in this article I am gonna walk you through the way we debug Rx Observables and Subscribers.

Improving UX with RxJava :In a perfect mobile world users would never lose connectivity, servers will never return errors and bacon would have been low fat. It gets messy very quickly. If an exception is thrown during the execution of Rx it will be returned in onError. That covers any part of the RxJava chain. With the traditional callback pattern you have to go through a lot of work to propagate errors back to the original callback.

RxJava allows you to put all error handling logic in one place. It allows you to not worry about error propagation, it does that for you. Now I want to discuss why other concurrency options are not as viable. Take this 9, word must have RxJava guide for Android Developers with you. You may remember that AsyncTask has a cancel method.

This is achieved by calling the isCancelled method in doInBackground and bailing. The other pieces are handled by Rx. No need to worry about leaking the activity specifically large amount of memory nor worry about accidental attempts to update a UI that is no longer present.

I will give a lite introduction to the different parts. In subsequent sections I will dive deeper into specifics for each. The goal is for you to have a high level overview.

It helps to compare this to an existing design pattern.

In this package, you will find:

In the observer design pattern there is a subject that maintains a list of observers. The subject notifies observers of any state changes. In the context of Rx you can think of producers as being the subject. Producers will notify their observers when state changes.

This is how data is produced. Originally there was one producer, called the Observable. Observable generates data and passes it on. There are others that are very similar they just produce more or less data.

Next we have Operators which transform data. They take data that an Observable or another Operator produced and modify it in some way.

There are lots of different operators that can alter the data in many ways. Next we have Subscribers you can think of them as consumers or as callbacks.

They handle the results of work. This is where you typically react to work being done.

Think of updating the UI after getting the results back from a network call. A Subscription represents work that is being done. Being able to cancel work is one of the crucial convenience factors we discussed in the beginning of the guide. That leaves us with Schedulers, Schedulers represent where work i.To be honest with you, at first I thought RxJava was just way to difficult to understand and the ideia to add a library just to use these new tools was very troubling for me.

Slowing down the Main Thread causes sluggish apps. Get fast, free shipping with site Prime. Which brings us to the other reasons why you should be using Rx. All Rights Reserved.

Try the site edition and experience these great reading features: Reactive Programming with Java and ReactiveX. Print edition must be downloadd new and sold by site. But that will change quickly - a big part of the power of RxJava is in all of the operators included in the framework.

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